They do mention that the 8 Gig version of the laptop is stuttering while just working on Google Docs in a way that the 16 Gig version does not.

> The Surface Laptop would hang for a few seconds like this several times a day, even when I thought I wasn’t pushing it too hard. I’ve had these temporary freezes while just working in some Google Docs — no Teams call running or anything streaming in the background.

The issue seems to be that there isn't enough RAM for light multitasking or heavier applications without hitting the swap file hard enough that the system stutters.